Elevating and dumping body.



G. \W.\LALLY. f ELEVATING AND brmme Booy.

APPLICATION FILED SEPT. 20. 1912.

Patented Nov.. 2, 1915.

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4(.iElOItf-E W. LALLY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO LALLY COMMERCIAL BODY COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS.

Specification of Letters Patent.

ELEvA'rING AND DUMPING BODY.

Patented Nov. 2, 1915.

j Application filed September 20, 1912. Serial No. '721,397'.

To all whom t may concern Be it known that I, GEORGE LALLY, a citizen of the -United States, and resident of Boston, county of Suffolk, and State of Masterial in lump or granular form, such as coal,

broken stone, and the .like and, while not.`

limited thereto, is well adapted for use as a part of automobile truck constructions. The invention has to do especially with improved mechanism for elevating 4the body from the vehicle frame-work or chassis, and

tilting the same to dump its contents,-m ore particularly, by tilting the forward part of the body upward about an axis underneath its rear portion.

rlhe invention provides improved means for starting the lift of the body from its horizontal position so as to enable the initial movement, which is usually the most diflicult, to be readily accomplished without undue effort and with no severe strain upon the parts of the apparatus.

rIhe invention further provides improved means whereby the impulse which' imparts same time raise the rear portion of the body,

such elevation of the rear body portion being optional and conveniently of the operator. i

Heretofore the lifting or tilting mechanism ofthistype of vehicle has required a more or less complex arrangement of rods,

under the 'control levers, etc., and has also employed rods or levers of such'length that it was impractical to operate them at the initiation of the liftin and tilting movement between the top sills of the vehicle and the bottom of the vehicle body. Therefore heavy iron .braces or brackets were usually secured to the yew hicle body, depending below'the top of the v sills, or braces, iron strips or the like have been ap lied to the body`in order to afford a point o connection for the lifting rods, substantially at the upper or top portion of the body. Such prior constructions were un' satisfactory, rev airing an c xpensive construction-and a o a long lifting movement tion are to provide mechanism which will automatically and simultaneouslyact to raise or tilt the forepart of the vehicle body, while moving the entire vehicle bodyrearwardl'y,

and further'allowing it to rest in its firm and solid supporting bearings on the rear importance in the large modern automobile freight trucks2 where a specially heavy load is handled as it would be'entirely impractical, if lnot impossible, to actually lift both ends of the vehicle body upwardly in order to securea tilting movement.

The invention will be betterv .understood from' the following detailed description, taken in connection with the accompan ing drawings, and will be thereafter pointe out -in the appended claims. the tilting movement may, if desired, at thel anism, wherein `nmy yimprovements are embodied, certain'parts'being broken away and -in section; and Fig. l2.is 'a side elevation of the apparatus.

A vehicle framework, which may be the chassis frame of an automobile truck, is shown at 10 havin a lusual series of spaced apart, transverse sillsll fitted thereon, these sills being, as shown, of some little width so as to sustain the body 1 at a spaced elevation above the top of thechassis frameproper 10. f At the rear end of the body instead lof a sill 11, bearing blocks 12 are mounted on -`thechassis frame, providing bearings for a-"shaft 13 o n which are fitted roller supports 14 to be engaged by wedge formations y15, fixed to the rear end of the body, and

the function whereof is later more particularly ex lained. Power im ulse for the tilting of) the body is derive primarily as shown from a crank shaft 16, connected by 'ze' sill of the frame. This feature is of special reducing gearing 17 to a shaft 18, these parts being suitably journaled in bearing blocks or plates 19 upstanding from the chassis frame. The shaft 18 has fixed thereon winding drums 20 for winding up chains, or the like 21, which are fixed, as at 22 to a shaft 23, having at its ends flanged rollers 24 adapted to rest on and move along trackways formed therefor on the chassis frame. As shown, the portion of these trackways toward the forward part of the body are horizontal, as seen at 25, and the rearward part thereof is formed by wedge members providing upwardly inclinedv track portions 26, this arrangement being preferable for most effective action, as later explained. The shaft 23 is engaged by long lifting link bars 27, pivoted at their rear endsto the body as seen at 28, at points relatively remote from the front of the body and the forward ends of these bars are provided with closed, elongated slots 29, in which the shaft 23 has bearings and through the length of which it is adapted to move. Another and shorter pair of lifting link bars 30 are pivoted to the body at 31, some little distance forward of the pivot points 28, and these bars have at their lower yforward ends forked or hook formations 32, adapted to engage over theshaft 23 when the body is in lowered position. -One of the forks 33 at the forward or outer side of these bars is elongated, as shown, so as to remain in contact with the shaft 23 as the body is elevated to guide these bars down for the forked formations 32 to engage the shaft 23 again, when the body is lowered. lt will be understood that, by reason of the bars 30 being shorter than the bars 27 and pivoted nearer the front of the body, they extend down therefrom to the shaft 23 at a considerably greater angle than-the relatively longer bars 27, which are pivoted to the body farther back thereon. For this reason, when the crank shaft 16 is operated to cause the chains 21 to draw the shaft 23 backward, the first action is for this shaft to exert force rearwardly and upwardly on the bars 30, and by reason of these bars extending upwardly at a considerable angle, a relatively large component of this force is exerted in lifting the body, the effectiveness of the lifting action being also correspondingly greater by reason of the pivot points of the bars 30 being relatively near the front of the body and farther from its axis 13 of the pivotal movement. The start of tilting movement from the horizontal is further made easier by the fact that the rollers 24 begin their movement along the horizontal track portions 25 and do not reach the inclines 26 until the tilting movement has been well started. During this initial movement the'bars 27 are movin relativelyto the shaft 23, so that this sha travels through the length of the elongated slots 29. .By the time the shaft has reached the end of these slots, the body has been tilted to a considerable degree, so that the long bars 27 now extend upward at a considerable angle, and are adapted to take up the further tilting of the body without requiring undue effort on the part of the operator, or without producing an excessive rearward thruston'the body. About this time the rollers 24 start on the inclined track portions 26, so that the subsequent and final stages of the tilting movement are quickly effected and the body brought to the desired angle for dumping its contents in the shorteft possible time, and with the least possible e ort.

It may sometimes be desirable to elevate the rear of the body, and my invention further provides means whereby this may be accomplished at will by the same power impulse which tilts the body for dumping. When it is desired to merely swing the body about the axis shaft 13 without lifting its rear end, hooks 341 pivoted at 35'tc the rear of the body are adapted to swing down over and engage the shaft 13, as seen in Fig. 2, thus preventing any rearward movement of the body. When, however, it is desired that the rear of the body shall be elevated, these hooks are swung upward away from the shaft 13, and the body isthen permitted a limited`y rearward `movement, whereby the wedge portions 15 ride along up on therollers 14, causing the rear of the body to he elevated, as it moves backward. rlhe body is prevented from moving backward too far along the wedges 15 by other hooks 36 pivoted at 37, so as to engage the shaft 13 before the rollers 14 pass off the wedges 15 The simplicity of construction of my 1mproved vehicle and the easeof operation, as well as the possibility of speed in tilting the vehicle body will be readily appreciated. By means of the short thrusting member 30, which acts upon the forward end of vehicle body and-exerts the initial thrusting movement while the rolls 23 are being moved along the straight and level portion 2 5 of the sills, I am enabled to handle a very heavy load with as much eed. and ease as formerly was re uired to lift and tilt comparatively small oads. The bearing of the rolls 23 directly upon the top of the wagon sills provide a very firm and secure support and permits the entire liftin mechanism to be made with a minimum welght of material andbrings the load on the vehicle fram where it can be best sustained. i

There is thus constituted a. mechanism of maximum simplicity and great strength of construction, adapted to apply the power at the beginning of the tiltin llft of the body in an ed'ective manner, so t at the beginning of the lift is accomplished as easily as lthe forth may be modified without departing from the substance of the invention in its broader aspects, and I therefore do not desire to be limited to the particular disclosure herein, or in any way7 except as set forth in the appended claims.

Having described my invention, what I claim as new andA desire to secure by Letters Patent is:

. l. An elevating and dumping vehicle,

. having a 'vehicle'frame and a movable body adapted to be tilted about a pivot adjacent the rea-r end thereof, mechanism to tilt said body about said pivot, actuated by a longitudinally movable member, adapted to actuate two pairs of thrust members -successively during its-continuous longitudinal movement, one pair of thrust members being comparatively short to secure a relatively direct upward tilting thrust on said body to initiate the tilting movement and bei-ng detachable from said longitudinal movable member, and the second thrust element being constructed and arranged to take up and continue the tilting action at a point on said body nearer the pivot than the point ony said body engaged by the first thrust members.

2. An elevating and dumping vehicle, having a vehicle frame and a movable body adapted to be tilted about a pivot adjacent the rear end thereof, mechanism to tilt said body about said pivot, actuated by a longitudinally movable member adapted to bear on top of the vehicle frame duringv the first portion of its movement, and adapted to actuate two thrust elements successively during its continuous longitudinal movement,

one thrust element being comparatively short to secure a relatively direct upward tilting thrust on said body to initiate the tilting movement only and then being inoperative to cause further tilting and the second thrust element being constructed and arranged to take up and continue the tilting action at a point on said body nearer the pivot than thepoint on said body engaged by the first thrust element, both said `thrust members having direct pivoted connection with the body portion of the vehicle at the points of thrust thereon.

3.. An elevating and dumping vehicle, having a vehicle frame and a movable body adapted to be tilted on said frame about its rear end, mechanism to tilt the body, comprising means acting between the top of the vehicle frame and the bottom supports of said'body, said means including two pairs of thrust members each independently pivoted to the body and actuated from a single horizontal shaft'. having provision'to roll upon the top of the frame during the initiation of the tilting action and then to roll upwardly on an incline during the completion of the tilting action, means to move said horizontal shaft longitudinally,` one pair of relatively short thrustmembers being actuated to initiate the'tilting thrust while said horizontally-movable bar is rolled on the straight frame, and the other pair of thrust members being actuatedto complete the tilting action onlyduring the movement of said horizontal bar on its incline, the pair of short thrust members being operatively disconnected from the horizontal shaft during the completion of the tilting action.

ln testimony whereof, I have signed my name to this specification, in the presence of two subscribmgwitnesses.

GERGE lV. LALLY.

Witnesses:

JAMES R. Honnnn, R. J. Hausnr. 

